Directions

Physical Address

Base Seattle is located in the SoDo district (South of Dome) at:

14 S Massachusetts St
Seattle, Washington
98134

Driving

Driving directions map, over bypass
View Larger Map

Driving from the north on I-5

  1. Take exit 164 toward I-90 E/Bellevue/Spokane
  2. Keep right at the fork, follow signs for I-5 S/Portland/Tacoma
  3. Keep right at the fork, follow signs for 4th Ave S and merge onto I-90 W
  4. Take the left exit toward 4th Ave S
  5. Turn right at 4th Ave S
  6. Slight right onto the ramp to Edgar Martinez Dr S
  7. Turn right at Edgar Martinez Dr S
  8. Continue on S Atlantic St
  9. Turn right at Colorado Ave S.
    The street sign for Colorado has an arrow pointing left - go right instead, up and over the viaduct. There is a small green sign indicating the correct direction for Terminal 46, E. Marginal Way S., U.S. Coast Guard.

    Appearance may change due to ongoing construction.
    Turn right on Colorado, despite what the arrow on the overpass street sign says.
    View larger image.
  10. Proceed over the overpass, taking a left onto Alaskan Way S
  11. Turn right at S Massachusetts St  

Driving from the south on I-5

  1. Take exit 164B for 4th Ave S
  2. Turn right at 4th Ave S
  3. Slight right onto the ramp to Edgar Martinez Dr S
  4. Turn right at Edgar Martinez Dr S
  5. Continue on S Atlantic St
  6. Turn right at Colorado Ave S.
    Note, the street sign for Colorado has an arrow pointing left - go right instead, up and over the viaduct. There is a small green sign indicating the correct direction for Terminal 46, E. Marginal Way S., U.S. Coast Guard.
  7. Proceed over the overpass, taking a left onto Alaskan Way S
  8. Turn right at S Massachusetts St

Driving from I-90

  1. Take the exit toward 4th Ave S
  2. Turn right at 4th Ave S
  3. Slight right onto the ramp to Edgar Martinez Dr S
  4. Turn right at Edgar Martinez Dr S
  5. Continue on S Atlantic St
  6. Turn right at Colorado Ave S.
    Note, the street sign for Colorado has an arrow pointing left - go right instead, up and over the viaduct. There is a small green sign indicating the correct direction for Terminal 46, E. Marginal Way S., U.S. Coast Guard.
  7. Proceed over the overpass, taking a left onto Alaskan Way S
  8. Turn right at S Massachusetts St

Transit

View Metro's web site at https://kingcounty.gov/depts/transportation/metro.aspx. Stadium Station on the Light Rail is an approximately 20 minute walk to Base Seattle. Many buses also terminate in the Pioneer Square/SoDo/International District area with a similar walk. A small number of buses serve stops on 1st Ave S closer to Base Seattle, such as the 21 which runs from West Seattle to Downtown. Other routes that serve these stops are more limited.

Regional transit agencies include Community Transit (Snohomish County) at https://www.communitytransit.org/ and Sound Transit (regional in King, Pierce and Snohomish counties) at https://www.soundtransit.org/.

Walking

Check directions on a mapping service such as https://www.google.com/maps, as active construction in this area may change walking routes. Be aware of both train and semi truck traffic, and always use marked crosswalks. The flyover that goes up and over the viaduct along S. Atlantic St. has a sidewalk and is a good walking route when the direct route underneath the viaduct is blocked by a train.